This is weird - I'm shooting at f1.8, 1/250, ISO 200 in manual exposure mode. The exposure setting in normal view (through the viewfinder) stays exactly the same when I switch to live view as I would expect. However when I change to aperture mode (exposure setting is still f1.8, 1/250, ISO 200) and switch from normal view to live view, the shutter speed changes to 1/60. In other words, in aperture mode the shot is overexposed in live view vs. normal view even though f-stop and ISO are the same. I would expect the setting to remain the same just as they did when shooting in manual mode.
Any ideas on why this is happening? Why is the exposure changing in live view while in aperture mode when everything else (subject, f-stop, ISO, lighting, etc.) is the same?
I think I know what's going on. are you shooting the scene without having the viewfinder coveredwhen in viewfinder mode? it is not uncommon to have light enter through the back of the viewfinder and change the exposure.
"Extraordinary claims require extraordinary proof " - Carl Sagan
> I think I know what's going on. are you shooting the scene >without having the viewfinder coveredwhen in viewfinder mode? > it is not uncommon to have light enter through the back of >the viewfinder and change the exposure.
Thanks David for your response. But yes. when I am in live view, I do have the viewfinder covered. I didn't use the cover, but rather a piece of gaffer tape i always have with me which does the job as well. Oddly enough, this does not happen with my D700. With the D700, the exposure stays the same.
I did a small experiment and found that my D600 does change exposure from live view to normal in aperture priority. In my case, though, the difference is only 1/3 stop brighter. Since I normally expose in Manual mode, I guess I get to regard it as an interesting quirk. Does your camera change two stops for every scene?
Another experiment, this time with the D300. Four exposures, 2 manual, 1 each normal and LV, 2 aperture, ditto. I used my discretion for the manual exposures but they were virtually identical except that the LV shot was marginally darker (the histograms shifted minimally but noticeably). The same lack of substantial exposure shift was true of the aperture priority exposures except in this case the LV was equally marginally lighter. The difference in each case I would guesstimate to be in the realm of a Just Noticeable Difference, however that may be quantified.